Are you reading what we are reading? The effect of who interprets medical images on estimates of diagnostic test accuracy in systematic reviews
S Brealey and M Westwood
Br J Radiol 2007;80 674-677
http://bjr.birjournals.org/cgi/content/abstract/80/956/674?etoc
Whilst the influence of the observer on diagnostic test performance is frequently ignored, there is evidence that this influences estimates of accuracy. Characteristics of observers that should be considered when designing systematic reviews of diagnostic test accuracy are: allocation of images to be read by observers; number, experience and training of observers; profession of observers; and assessment of observer variability and examination of its effect on test accuracy
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